FIleVault Key is Unknown M2 Mac

Decrypt and encrypt again. 

On one of the systems, run a policy with the Disk Encryption payload and the Action set to "Issue new Recovery Key", and the Recovery Key type as "Individual".  As long as your initial FileVault profile/policy was set to send the keys to Jamf Pro, it should issue and escrow a new key.

There's also a Jamf script that uses the Jamf Helper to prompt the user for their password and then creates a new recovery key.  Check the script at https://github.com/jamf/FileVault2_Scripts/blob/master/reissueKey.sh and modify for your needs.  It should still work on Apple Silicon.

Thank you Very Much, i had tried it on the Device directly with two commands:
sudo fdesetup changerecovery -personal

and then Sudo jamf recon, it works :) 

i have another question, we also have a hidden Admin Account, whwhich is created during the enrollment, by some Users, i see the Admin Account as FileVault User, how can i change thhis easily ? 

Hey, can you explain how to create this hidden Admin Account?

Also, if possible help me with that; I've tried those 2 commands, runs good, I could see the RecoveryKey on terminal but still showing as unknown on Jamf

Hi.. In the prestage..go to 'account settings'   there is a checkbox " Hide managed administrator account in Users & Groups"